我正在运行 FC35，刚刚插入基于 RealTek 8761b 芯片组的 USB 适配器蓝牙适配器。 FC35 附带 /lib/firmware/rtl_bt 目录中的以下固件：
-rw-r--r--. 1 root root 80 Oct 28 09:19 rtl8761b_config.bin.xz
-rw-r--r--. 1 root root 21460 Oct 28 09:19 rtl8761b_fw.bin.xz
启动时 dmesg 显示加密狗的以下内容：
[ 1.218007] usb 7-1: New USB device found, idVendor=2550, idProduct=8761, bcdDevice= 2.00
[ 1.218013] usb 7-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 1.218016] usb 7-1: Product: Bluetooth Radio
[ 1.218019] usb 7-1: Manufacturer: Realtek
[ 1.218021] usb 7-1: SerialNumber: 00E04C239987
现在，如果我运行 bluetoothctl 并发出 list 命令，我会看到：
Controller 00:E0:4C:19:73:74 myhost.com [default]
在 bluetoothctl 中，我告诉 BT 加密狗扫描设备，但它什么也没找到。我什至在范围内带了几台设备，设置了蓝牙键盘进行配对，但仍然没有任何结果。
我的 dmesg 是否应该包含有关加载 8761b 固件的消息？ （我没有看到任何这样的消息）-也许是一条线索？
更新：
使用 modinfo 我注意到内核模块没有引用我系统上找到的固件文件！ （注意它引用了 rtl8761a 而不是 rtl8761b）为什么不 - 这是我需要修复的：
[root@myhost rtl_bt]# lsmod | grep rtl
btrtl 28672 1 btusb
bluetooth 671744 35 btrtl,btintel,btbcm,bnep,btusb,rfcomm
[root@myhost rtl_bt]# modinfo btrtl
filename: /lib/modules/5.15.10-200.fc35.x86_64/kernel/drivers/bluetooth/btrtl.ko.xz
firmware: rtl_bt/rtl8852au_config.bin
firmware: rtl_bt/rtl8852au_fw.bin
firmware: rtl_bt/rtl8822b_config.bin
firmware: rtl_bt/rtl8822b_fw.bin
firmware: rtl_bt/rtl8821a_config.bin
firmware: rtl_bt/rtl8821a_fw.bin
firmware: rtl_bt/rtl8761a_config.bin
firmware: rtl_bt/rtl8761a_fw.bin
firmware: rtl_bt/rtl8723ds_config.bin
firmware: rtl_bt/rtl8723ds_fw.bin
firmware: rtl_bt/rtl8723bs_config.bin
firmware: rtl_bt/rtl8723bs_fw.bin
firmware: rtl_bt/rtl8723b_config.bin
firmware: rtl_bt/rtl8723b_fw.bin
firmware: rtl_bt/rtl8723a_fw.bin
license: GPL
version: 0.1
description: Bluetooth support for Realtek devices ver 0.1
author: Daniel Drake <[email protected]>
srcversion: AF29B80A444B91C5F9A1DD9
depends: bluetooth
retpoline: Y
intree: Y
name: btrtl
vermagic: 5.15.10-200.fc35.x86_64 SMP mod_unload
sig_id: PKCS#7
signer: Fedora kernel signing key
sig_key: 73:A5:B1:60:F6:91:8E:75:8E:9E:2D:95:52:3A:82:2E:A3:46:87:D7
sig_hashalgo: sha256
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